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10+ Adorable 1st Birthday Shirts That Make Your Baby The Star Of The Party

Your baby's 1st birthday is a once-in-a-lifetime celebration! Discover over 10 adorable 1st birthday shirts ideas for boys and girls, styling tips, and how to choose the perfect design. If your kid’s special day is coming, let’s make the day unforgettable with LionKingShirt’s soft, unique, and customizable birthday shirts!
Billy Garzon Billy Garzon Update April 28, 2025 74
1st Birthday Shirts
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    When it comes to the first birthday, it will be an incredibly special occasion for each family. It is not just the first milestone of your baby; it is a recognition of your love and effort. After 9 months of sheltering, 12 months of love and caring, finally, you can say: "Happy First Birthday!"

    And to commemorate that special day, LionKingShirt introduces the 1st birthday shirts. It belongs to our bigger collection: Kids Birthday Shirts Collection. These shirts will be an excellent way for your angels to shine. 

    In this blog, we will discuss the most adorable 1st birthday t shirts for boys, girls, and both of them. Besides, you will know how to choose the perfect shirt, how to style it, and where to get a high-quality shirt. So, now, let's explore with us!

    Why 1st Birthday Shirts Are Important

    After seeing this, you must be wondering, "Is a shirt for a 1st birthday really necessary?"Let's explore these reasons first to get your own answer.

    Creating Memorable Photos

    We all know that photos are an essential part of a birthday party. It's a great way to preserve memories, especially when your child turns one. A special shirt will make your kid a star in the crowd. Moreover, this shirt can become an unforgettable keepsake that later, you will immediately remember that day whenever you see it.

    It Shows Your Baby's Personality

    We offer a wide range of first birthday shirts, from humorous to themed designs. So, you can choose one based on your child's hobby, and it will say something about them. 

    For example:

    - If your baby loves watching Cocomelon, consider a shirt featuring Cocomelon's images.

    - If your angel likes princesses, a pink shirt with an image of a Disney princess is not a bad choice.

    It’s Comfortable and Practical

    Last but not least, comfort is always the top priority for your kids. Because kids have sensitive skin and we need to protect them. And a soft and breathable cotton shirt will be a perfect choice, especially when you organize an outdoor party.

    So, do you get the answer? We think that it depends on what you want that day to feel like, then you will have the final decision. 

    Top 5 Adorable 1st Birthday Shirt Ideas for Boys

    Now, it’s time to explore and find the perfect kids for your kids. If you have a little and cute boy, here are some suggestions:

    1. Jungle or Safari Theme

    For little explorers, this will be an excellent idea. 

    - You can choose illustrations of lions, giraffes, tigers, leaves, or trees. 
    - Add the phrase "Wild ONE" to emphasize the main star of the birthday. 
    - Consider choosing earthy colors like greens, browns and yellows to match the theme.

    2. Baby Shark Turns ONE

    "Baby Shark" is not a strange song to all children all over the world. And we believe your child is no exception.

    - Using bright colors such as blue, yellow, purple, and red.
    - Add oceanic graphics like smiling sharks and bubbles.
    - Print the phrase "Doo Doo Doo… I’m ONE!"

    3. Fruit Theme

    It's perfect if your kid's birthday is in summer. Colorful fruits like watermelon, oranges or grapes will attract all attention. Besides, you choose other details such as smiling faces, ice creams and cute phrases like "Berry Cute ONE", "ONE in a Melon" or "ONE Sweet Peach".

    4. Dinosaur Theme

    It's a good choice for energetic boys.

    - Roar with cute images of dinosaurs, footprints, and other details of prehistoric times.

    - Grab attention with the phrase "Roaring Into ONE" or "Dino-Mite at ONE"

    - Colors like green and orange can be chosen. 

    5. "Mr.ONEderful" Theme

    It will be a very different way to celebrate your little one's day. This shirt makes your kid charming and elegant. 

    - Mix with bow ties and suspenders. 

    - Choose tones like black, blue or navy.

    - Perfect for a formal birthday party.

    Top 5 Adorable 1st Birthday Shirts for Girls

    1. "One-derful Princess" Glitter Shirt

    Each little girl probably wants to be a beautiful princess. Her dream will come true with this shirt.

    - You can choose other details like sparkling letters or a little tiara.
    - Pair with a pink skirt and baby shoes to have a beautiful look.

    2. Mermaid theme

    This shirt will bring a magical underwater adventure for your little girls with beautiful mermaids, shells, stars and other oceanic creatures.

    You can add some adorable phrases such as "ONEder the Sea", "Shell-ebrating ONE Year" or "Making Waves at ONE".

    3. Strawberry Theme

    The sweet color of strawberry is highly recommended for girls. It makes them more lovely and feminine. 

    Some ideas you can try:

    - "Berry First Birthday"

    - "Berry Cute at ONE"

    - "Berry Sweet Birthday Girl"

    4. Donut Theme

    For sweet little girls, this theme will grab their attention at first glance.  Imagine colorful donuts with lots of sprinkles. How beautiful it is!

    Some suggestions for you:

    - "Donut Grow Up – I’m ONE!"

    - "Sweet ONE"

    5. “Twinkle Twinkle Little Star, She’s ONE”

    This will be a wonderful gift for your little princess. Stars, moons, and clouds let them feel like they're in a dream.

    It's perfect for birthday parties at night or warm dinners.

    Cute Gender-Neutral 1st Birthday Shirt Ideas

    Besides the shirt for only boys or girls, we provide other options that every kid can wear:

    - Minimalist “ONE” Shirt: It's simple but meaningful. Your child can reuse it many times after the birthday party.

    - Woodland Animal Shirt: Colorful images of bears, rabbits or cats will make them fall in love.

    - Organic Cotton Shirt with Text: There are so many messages for you, such as "One Year of Awesome", "Level 1 Unlocked" or "One-derful".

    How to Style Your Baby’s Birthday Look

    We all know the 1st birthday shirt will be the centerpiece but if you know how to mix and match it, everything will be more excellent.

    Here are some ideas:

    For Boys

    ✔ Denim shorts or joggers
    ✔ Suspenders or bowtie (if baby allows!)
    ✔ Birthday hat or snapback cap

    For Girls

    ✔ Tulle tutu or frilly skirt
    ✔ Soft headband or crown
    ✔ Sparkly or themed shoes

    For Cake Smash

    ✔ Keep it simple: shirt + bloomers or shorts
    ✔ Add a bib or apron to protect the design
    ✔ Have a backup outfit ready for after the mess!

    What Makes a Great 1st Birthday Shirt?

    When shopping or preparing for a shirt, take a look at four factors:

    ✔ Soft Material: Because kids have sensitive skin, we need to prioritize soft fabrics such as 100% cotton or organic cotton.

    ✔ Easy to Wear: Shirts with snaps at the shoulder or stretchy necks will be more comfortable and easier to wear.

    ✔ Personalization Options: This allows you to add names, ages, and favorite messages, making it truly belong to your kids.

    ✔ Theme-Friendly Colors: Remember, you need to think about the party theme first, and then, choose a shirt that has suitable colors.

    Why Parents Love LionKingShirt’s Birthday Shirts

    At LionKingShirt, we know how important this day is. That’s why we offer:

    • Unique Designs: We always try to give a one-of-a-kind design to your angels.
    • Easy Personalization: Yes, you can add your kid’s name, age, and what you want to say.
    • Soft, Baby-Safe Fabric: All our shirts are made with materials that are gentle on skin and made to last. Besides, the DTG printing will keep the images and text last longer.
    • Fast, Friendly Service: Our team is always ready to support you whenever you need.

    What Real Parents Are Saying

    "I organized a successful 1st birthday party for my son. I ordered a "Roaring Into ONE" shirt and my son was very excited. The fabric is so soft and bright." (Hanna, mom of Daniel)

    "We made a princess theme for our little princess. Her 1st birthday party is so memorable, we believe that all attendees will remember that day forever." (Lisa, mom of Anna)

    Final Thoughts: Let Your Baby Shine

    All parents, your 1st baby's birthday only turns one once. So, whether you are going to prepare a big party outdoors or a warm dinner with your family, a 1st birthday t shirt will make it extra special. It is not just an item of normal clothing; it's an unforgettable keepsake.

    Now, it's time to find a perfect shirt for your angel. Visit LionKingShirt to explore our 1st birthday shirts collection. Order it and let your baby shine on that big day.

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